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SMC直通型速度控制閥原理@SMC壓力開關型號

簡要描(miao)述：SMC直通型速度控制閥原理@SMC壓力開關型號
由*磁(ci)鐵構成(cheng)的(de)轉子，激(ji)磁(ci)線圈構成(cheng)的(de)定(ding)子和(he)把旋(xuan)轉運動轉換成(cheng)直(zhi)線運動的(de)進(jin)給絲(si)桿(gan)及(ji)閥門等部分組成(cheng)。

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• 更(geng)新時間：2015-06-29
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SMC直通型速度控制閥原理@SMC壓力開關型號

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SMC直通型速度控制閥原理@SMC壓力開關型號

SMC直(zhi)通型速度控(kong)制閥裝在節(jie)汽門(men)旁(pang)通空氣孔上，由怠速控(kong)制器依(yi)據(ju)點火信號，在引(yin)擎轉速低于(yu)750RPM時，即(ji)使怠速控(kong)制閥動作，以(yi)提升引(yin)擎轉速，
在(zai)引擎轉速(su)(su)超(chao)過1050RPM后(hou),則(ze)停止(zhi)動(dong)作(zuo)。在(zai)配備冷氣(qi)系統(tong)的車種，又將(jiang)此控制(zhi)閥(fa)稱為怠速(su)(su)提速(su)(su)閥(fa)后(hou)因冷氣(qi)壓(ya)縮(suo)機動(dong)作(zuo)后(hou)，產生引擎負(fu)載，使(shi)引擎怠速(su)(su)降低，而怠速(su)(su)控制(zhi)閥(fa)隨之動(dong)作(zuo)，以維持怠速(su)(su)的穩定性(xing)。
SMC直(zhi)通(tong)(tong)(tong)型速度(du)控制(zhi)閥(fa)主要部件有(you)(you)*磁(ci)(ci)鐵(tie)、電(dian)(dian)樞(shu)(shu)和旋轉(zhuan)滑(hua)(hua)閥(fa)等以(yi)及螺(luo)旋回位彈簧、電(dian)(dian)刷(shua)及引線(xian)(xian)等組成，滑(hua)(hua)閥(fa)固裝(zhuang)在電(dian)(dian)樞(shu)(shu)軸上(shang)，與電(dian)(dian)樞(shu)(shu)軸一起(qi)轉(zhuan)動，用以(yi)控制(zhi)流過旁(pang)通(tong)(tong)(tong)氣(qi)道的空(kong)氣(qi)量。*磁(ci)(ci)鐵(tie)固裝(zhuang)在外殼上(shang)，其(qi)間(jian)形(xing)成磁(ci)(ci)場。電(dian)(dian)樞(shu)(shu)位于*磁(ci)(ci)鐵(tie)的磁(ci)(ci)場中(zhong)(zhong)，電(dian)(dian)樞(shu)(shu)鐵(tie)心(xin)上(shang)纏有(you)(you)兩(liang)組繞(rao)向(xiang)相反(fan)的電(dian)(dian)磁(ci)(ci)線(xian)(xian)圈(quan)W1和W2。當(dang)(dang)線(xian)(xian)圈(quan)W1通(tong)(tong)(tong)電(dian)(dian)時(shi)，電(dian)(dian)樞(shu)(shu)帶動旋轉(zhuan)滑(hua)(hua)閥(fa)順時(shi)針偏(pian)轉(zhuan)，空(kong)氣(qi)旁(pang)通(tong)(tong)(tong)道關小；當(dang)(dang)線(xian)(xian)圈(quan)W2通(tong)(tong)(tong)電(dian)(dian)時(shi)，電(dian)(dian)樞(shu)(shu)帶動旋轉(zhuan)滑(hua)(hua)閥(fa)逆針偏(pian)轉(zhuan)，空(kong)氣(qi)旁(pang)通(tong)(tong)(tong)道截面開(kai)大。W1和W2的兩(liang)端與電(dian)(dian)刷(shua)集電(dian)(dian)環相連，經電(dian)(dian)刷(shua)引出與ECU相連接。如圖3－26所示，電(dian)(dian)樞(shu)(shu)軸上(shang)的電(dian)(dian)刷(shua)集電(dian)(dian)環，類(lei)似電(dian)(dian)動機換向(xiang)器結構，它由(you)三段滑(hua)(hua)片圍合而(er)成，其(qi)上(shang)各有(you)(you)一電(dian)(dian)刷(shua)與之(zhi)接觸。電(dian)(dian)樞(shu)(shu)線(xian)(xian)圈(quan)W1和W2的兩(liang)端分別焊接在相應的滑(hua)(hua)片上(shang)。當(dang)(dang)點火開(kai)關旋至“ON"時(shi)，接線(xian)(xian)插頭(tou)“2"上(shang)即有(you)(you)蓄電(dian)(dian)池電(dian)(dian)壓(ya)，電(dian)(dian)樞(shu)(shu)線(xian)(xian)圈(quan)W1和W2是否(fou)通(tong)(tong)(tong)電(dian)(dian)，則由(you)ECU中(zhong)(zhong)控制(zhi)W1和W2搭鐵(tie)的三極(ji)管VT2和VT1的通(tong)(tong)(tong)斷狀(zhuang)態決定。由(you)于占空(kong)比控制(zhi)信號和三極(ji)管VT1的基極(ji)之(zhi)間(jian)接有(you)(you)反(fan)相器，故三極(ji)管VT1
和VT2集電極(ji)輸出的(de)相(xiang)位相(xiang)反。因此，旋轉(zhuan)滑閥(fa)(fa)式怠速控制(zhi)閥(fa)(fa)上(shang)的(de)兩(liang)個(ge)電樞線(xian)(xian)圈總是交替地通過電流，又因兩(liang)組線(xian)(xian)圈繞向相(xiang)反，致使電樞上(shang)交替產生方向相(xiang)反的(de)電磁力(li)矩。

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